feat(env): clean env variable values

- Remove surrounding spaces
- Remove suffix new line characters

internal/configuration/sources/env/version.go

@@ -2,7 +2,6 @@ package env
 
 import (
 	"fmt"
-	"os"
 
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/govalid/binary"
@@ -18,7 +17,7 @@ func readVersion() (version settings.Version, err error) {
 }
 
 func readVersionEnabled() (enabled *bool, err error) {
-	s := os.Getenv("VERSION_INFORMATION")
+	s := getCleanedEnv("VERSION_INFORMATION")
 	if s == "" {
 		return nil, nil //nolint:nilnil
 	}